--- libmalloc/libmalloc-521.120.7/include/malloc/_ptrcheck.h
+++ libmalloc/libmalloc-646.0.13/include/malloc/_ptrcheck.h
@@ -31,7 +31,9 @@
 #define __single
 #define __unsafe_indexable
 #define __counted_by(N)
+#define __counted_by_or_null(N)
 #define __sized_by(N)
+#define __sized_by_or_null(N)
 #define __ended_by(E)
 #define __terminated_by(T)
 #define __null_terminated